I second what blondy said.
Are you a student? I am currently in a BSN program. Access to our universities' database of peer-reviewed journals/scholarly articles is INCLUDED in our tuition. Example: At my university, we go to our universities website, then click the library link, and then click search databases. After logging in using our given user id and password, we can then search the databases of peer-reviewed journals. If you are a student, I would call the library and see if your school has a similar program. It has helped me in my nursing research class tremendously. I don't have to spent hours looking for full text, free, peer-reviewed journal articles anymore. The database also has advanced search options to use to narrow it down to a specific topic, time frame, length, etc.